Zingles II (Android) app for $0.99
Zingles is a simple, yet highly addictive logic puzzle game. Simply complete the board ensuring that each row, each column and each subgrid contains only one instance of each piece--a Zingle piece. At the start of a game a number of pieces are placed on the board. These are known as givens. The remainder of the board contains blank squares for you to complete. You will need to use all your powers of deductive reasoning to solve the unlimited supply of boards that Zingles can generate. Zingles supports the ability to mark each board square with possible moves to aid in the puzzle solving. Zingles also supports the cross hatch marking aid to solving puzzles.